CN204946996U - The pole of electrokinetic cell and adopt the electrokinetic cell of this pole - Google Patents
The pole of electrokinetic cell and adopt the electrokinetic cell of this pole Download PDFInfo
- Publication number
- CN204946996U CN204946996U CN201520788752.9U CN201520788752U CN204946996U CN 204946996 U CN204946996 U CN 204946996U CN 201520788752 U CN201520788752 U CN 201520788752U CN 204946996 U CN204946996 U CN 204946996U
- Authority
- CN
- China
- Prior art keywords
- pole
- electrokinetic cell
- lug
- fuse part
- coping plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000010485 coping Effects 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims description 22
- 239000007769 metal material Substances 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 5
- 238000004146 energy storage Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Connection Of Batteries Or Terminals (AREA)
Abstract
The application relates to energy storage device field, particularly relates to a kind of pole of electrokinetic cell and adopts the electrokinetic cell of this pole.Pole comprise arrange vertically outer company headquarters, fuse part and lug connecting portion, lug connecting portion is located at the bottom of fuse part, and for being connected with lug, outer company headquarters is located at the top of fuse part, for being connected with external electric equipment, the area of passage in fuse part is minimum.Electrokinetic cell comprises coping plate, positive pole ear, negative lug, Positive Poles and negative pole pole, wherein, Positive Poles and/or negative pole pole are above-mentioned pole, pole is through coping plate, and the end face of coping plate is protruded in outer company headquarters, lug connecting portion protrudes the bottom surface of coping plate, and the positive pole ear corresponding with pole or negative lug are connected with the bottom surface of lug connecting portion.The electrokinetic cell that the application provides, without the need to arranging independent switching piece as electric current electricity cutting security architecture in housing, has saved cost, saves enclosure interior space, improves battery energy density.
Description
Technical field
The application relates to energy storage device field, particularly relates to a kind of pole of electrokinetic cell and adopts the electrokinetic cell of this pole.
Background technology
The volume energy density of lithium-ion-power cell promotes, and is the importance promoting its commercially competitive advantage further.Because adopting thinner barrier film, anode and cathode collector and pack case, the methods such as higher compacted density all have its shortcoming, as thinlyyer in barrier film battery safety can be reduced, higher compacted density then can allow the vacuumize time lengthening before fluid injection, normal temperature after fluid injection or quiescence in high temperature time lengthening, and then increasing process costs etc., this makes the structural design of compact and reasonable to lifting volume energy density important in inhibiting.
In order to realize the overcurrent protection function of battery; as shown in Figure 1; in correlation technique, the general mode by arranging power-off insurance hole on switching piece forms overcurrent electricity cutting security architecture; after one end of switching piece 60 and the bottom welding of Positive Poles 20; its other end welds with positive pole ear 10 again, realizes the switching of positive pole ear 10 and Positive Poles 20.Although this mode can play overcurrent protection function, because switching piece 60 has certain thickness, it is folded in inside battery, needs to take certain space, and then battery volume energy density is reduced.
Utility model content
This application provides a kind of pole of electrokinetic cell and adopt the electrokinetic cell of this pole, can housing interior structure be simplified, saving inner space.
The first aspect of the application provides a kind of pole of electrokinetic cell, comprise arrange vertically outer company headquarters, fuse part and lug connecting portion, described lug connecting portion is located at the bottom of described fuse part, for being connected with lug, described outer company headquarters is located at the top of described fuse part, for being connected with external electric equipment, the area of passage in described fuse part is minimum.
Preferably, power-off insurance hole is provided with in described fuse part.
Preferably, described power-off insurance hole is blind hole or through hole.
Preferably, the cross sectional shape in described power-off insurance hole is circle, Long Circle or rectangle.
Preferably, power-off insurance chamber is provided with in described fuse part.
Preferably, described fusing insurance chamber is spheroid, cylinder, square or cuboid.
Preferably, the radial dimension of described lug connecting portion is greater than the radial dimension of described fuse part.
The second aspect of the application provides a kind of electrokinetic cell, comprise coping plate, positive pole ear, negative lug, Positive Poles and negative pole pole, wherein, described Positive Poles and/or described negative pole pole are aforesaid pole, pole is through described coping plate, and the end face of described coping plate is protruded in described outer company headquarters, described lug connecting portion protrudes the bottom surface of described coping plate, and the described positive pole ear corresponding with described pole or negative lug are connected with the bottom surface of described lug connecting portion.
Preferably, described positive pole ear and described negative lug are multiple.
Preferably, also comprise insulation assembly, described coping plate is metal material, and described Positive Poles and described negative pole pole are all connected with described coping plate by described insulation assembly.
The technical scheme that the application provides can reach following beneficial effect:
The electrokinetic cell that the application provides is by arranging fuse part in pole inside; pole can be made to possess the function of overcurrent protection; thus eliminate the trouble of independent switching piece as electric current electricity cutting security architecture is set in enclosure interior; save cost; save enclosure interior space, improve battery energy density.
Should be understood that, it is only exemplary that above general description and details hereinafter describe, and can not limit the application.
Accompanying drawing explanation
The partial enlargement structural representation of electrokinetic cell of Fig. 1 for providing in the application's background technology;
The main TV structure schematic diagram of the electrokinetic cell that Fig. 2 provides for the embodiment of the present application;
The decomposition chart of the coping plate dependency structure that Fig. 3 provides for the embodiment of the present application;
The decomposition chart that Fig. 4 is the coping plate dependency structure that provides for the embodiment of the present application and battery core;
The side-looking structural representation of the Positive Poles dependency structure with power-off insurance hole that Fig. 5 provides for the embodiment of the present application;
Many battery cores that Fig. 6 provides for the embodiment of the present application structural representation is cutd open in side with the Positive Poles dependency structure in power-off insurance chamber, wherein lug is connected with bottom pole by the side of pole;
Many battery cores that Fig. 7 provides for the embodiment of the present application structural representation is cutd open in side with the Positive Poles dependency structure in power-off insurance chamber, wherein lug is connected with bottom pole by the both sides of pole.
Reference numeral:
10-positive pole ear; 10 '-negative lug;
20-Positive Poles; 20 '-negative pole pole;
The outer company headquarters of 200-; 202-fuse part; 202a-power-off insurance hole; 202b-power-off insurance chamber; 204-lug connecting portion;
30-positive pole insulation assembly; 30 '-negative insulation assembly;
300,300 '-above insulate film; 302,302 '-under to insulate film;
40-coping plate;
400-explosion-proof valve;
50-battery core;
60-switching piece.
Accompanying drawing to be herein merged in specification and to form the part of this specification, shows the embodiment meeting the application, and is used from specification one principle explaining the application.
Embodiment
Also by reference to the accompanying drawings the application is described in further detail below by specific embodiment."front", "rear" described in literary composition, "left", "right", " on ", D score is all with the pole of the electrokinetic cell in accompanying drawing and adopt the laying state of electrokinetic cell of this pole for reference.
As shown in Fig. 2 to 6, the embodiment of the present application provides a kind of electrokinetic cell, comprises positive pole ear 10, negative pole positive pole ear 10 ', Positive Poles 20, negative pole pole 20 ', positive pole insulation assembly 30, negative insulation assembly 30 ', coping plate 40 and battery core 50.Wherein, coping plate 40 is the predominant package parts at electrokinetic cell top, and Positive Poles 20 and negative pole pole 20 ' are each passed through the both sides of coping plate 40, and is fixed on coping plate 40 respectively by positive pole insulation assembly 30 and negative insulation assembly 30 '.In order to improve the fail safe of electrokinetic cell, the middle part of coping plate 40 is provided with explosion-proof valve 400.The end face of coping plate 40 is all exposed at the top of Positive Poles 20 and negative pole pole 20 ', and the bottom surface of coping plate 40 is then protruded in bottom, for connecting with corresponding positive pole ear 10 or negative pole positive pole ear 10 '.Positive pole ear 10 and negative lug 10 ' are for connecting Positive Poles 20 and negative pole pole 20 ', so that power delivery battery core 50 produced out with the interior corresponding anode pole piece of battery core 50 and cathode pole piece.
As shown in Fig. 2,5,6,7, the Positive Poles 20 of the electrokinetic cell that the present embodiment provides comprise arrange vertically outer company headquarters 200, fuse part 202 and lug connecting portion 204.Wherein, lug connecting portion 204 is located at the bottom of fuse part 202, and protrudes the bottom surface of coping plate 40, for being connected with positive pole ear 10, and outer company headquarters 200 is located at the top of fuse part 202, and protrude the end face of coping plate 40, for being connected with external electric equipment.Area of passage in fuse part 202 is minimum, when occur overcurrent time, fuse part 202 due to area of passage minimum, resistance is maximum, therefore can produce high temperature and fuse, and makes battery open circuit.Because the Positive Poles 20 in the present embodiment possesses overcurrent protection function; therefore without the need to arranging independent switching piece again as electric current electricity cutting security architecture; directly positive pole ear 10 is welded on the lug connecting portion 204 of Positive Poles 20; save cost; save enclosure interior space, improve battery energy density.Meanwhile, negative lug 10 ' also can be welded direct to the bottom of negative pole pole 20 ', to save space further.When battery core quantity >=2, its Type of Welding has two kinds of forms, one: the lug of multiple battery core abuts against together, then unified from side with carry out bottom pole welding (as shown in Figure 6); Two: the lug of multiple battery core be divided into two groups mutually away from, then carry out welding (as shown in Figure 7) from the two bottom sides of pole respectively.
In addition, the present embodiment also can adopt this pole possessing overcurrent protection function as negative pole pole 10 ', or uses at positive pole and negative pole simultaneously, its operation principle and set-up mode identical with Positive Poles 20, do not repeat them here.Further, owing to being carry out overcurrent protection by pole in the present embodiment, no matter be therefore monopole ear structure or multi pole ears structure (see Fig. 4), all can reach the effect of complete power-off.Along with the increase of lug quantity, required bonding area also can correspondingly increase, and it is larger that the radial dimension of the lug connecting portion 204 therefore in the present embodiment can do, to ensure enough bonding areas, fuse part 202 then can be relatively little, is beneficial to quick fuse.
In the present embodiment, coping plate 40 be generally aluminium, copper or other can with the material of the shell welded seal of battery, and in order to prevent Positive Poles 20 and negative pole pole 20 ' from conducting with coping plate 40, be provided with positive pole insulation assembly 30 especially and negative insulation assembly 30 ' carries out insulated barriers.As shown in Figure 3 and Figure 4, positive pole insulation assembly 30 comprises insulation film 300 and lower insulation film 302, negative insulation assembly 30 ' comprises insulation film 300 ' and lower insulation film 302 ', upper insulation film 300 and lower insulation film 302 are set in outside Positive Poles 20 by the top of coping plate 40 and bottom respectively, and then intercepting Positive Poles 20 and coping plate 40, upper insulation film 300 ' and lower insulation film 302 ' also intercept negative pole pole 20 ' and coping plate 40 by same method.
Still be described for Positive Poles 20 below.For fuse part 202, can realize by offering the mode such as power-off insurance hole 202a (see Fig. 5) or power-off insurance chamber 202b (see Fig. 6,7) thereon.
Particularly, as shown in Figure 5, power-off insurance hole 202a can extend inward by the side of fuse part 202, because electric current cannot insure hole 202a by power-off, flow through in the region can only insuring 202a side, hole by power-off, therefore compared to other region, the area of passage of fuse part 202 is minimum, therefore, it is possible to significantly increase the resistance value of fuse part 202, and then produce more heat when short circuit.Power-off insurance hole 202a can be through hole, also can be blind hole, as the cross sectional shape of power-off insurance hole 202a, can adopt the Common Shape such as circle, Long Circle, rectangle, can certainly adopt other shape, not limit at this.And the quantity of power-off insurance hole 202a, arrangement, size and shape etc. all can adjust accordingly as required.Because power-off insurance hole 202a communicates with the external world, therefore directly can process on the surface of Positive Poles 20.But adopt and the side face of Positive Poles 20 can be made in this way to occur areas of disconnection, be therefore unfavorable for being uniformly distributed of electric current, also can cause having a strong impact on simultaneously to the structural strength of Positive Poles 20.
As shown in Figure 6 and Figure 7, adopt the mode that power-off insurance chamber 202b is set in the inside of fuse part 202 can reduce area of passage equally, and, because this structure can not make the side face of fuse part 202 disconnect, therefore electric current is by the surrounding dispersion circulation of power-off insurance chamber 202b, be beneficial to being uniformly distributed of electric current, Positive Poles 20 also can be made to retain larger structural strength simultaneously.The structure of power-off insurance hole 202b can be spheroid, cylinder, square, cuboid, other polyhedron or more complicated structure.
The electrokinetic cell that the present embodiment provides can make Positive Poles 20 or negative pole pole 20 ' possess the function of overcurrent protection; thus eliminate the trouble of independent switching piece 60 as electric current electricity cutting security architecture is set in enclosure interior; therefore cost had both been saved; also save enclosure interior space, improve battery energy density.
The foregoing is only the preferred embodiment of the application, be not limited to the application, for a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in the application.
Claims (10)
1. a pole for electrokinetic cell, is characterized in that, comprise arrange vertically outer company headquarters, fuse part and lug connecting portion,
Described lug connecting portion is located at the bottom of described fuse part, and for being connected with lug, described outer company headquarters is located at the top of described fuse part, and for being connected with external electric equipment, the area of passage in described fuse part is minimum.
2. the pole of electrokinetic cell according to claim 1, is characterized in that, is provided with power-off insurance hole in described fuse part.
3. the pole of electrokinetic cell according to claim 2, is characterized in that, described power-off insurance hole is blind hole or through hole.
4. the pole of electrokinetic cell according to claim 3, is characterized in that, the cross sectional shape in described power-off insurance hole is circle, Long Circle or rectangle.
5. the pole of electrokinetic cell according to claim 1, is characterized in that, is provided with power-off insurance chamber in described fuse part.
6. the pole of electrokinetic cell according to claim 5, is characterized in that, described fusing insurance chamber is spheroid, cylinder, square or cuboid.
7. the pole of electrokinetic cell according to claim 1, is characterized in that, the radial dimension of described lug connecting portion is greater than the radial dimension of described fuse part.
8. an electrokinetic cell, is characterized in that, comprises coping plate, positive pole ear, negative lug, Positive Poles and negative pole pole, and wherein, described Positive Poles and/or described negative pole pole are the pole described in any one of claim 1 to 7,
Pole is through described coping plate, and the end face of described coping plate is protruded in described outer company headquarters, and described lug connecting portion protrudes the bottom surface of described coping plate, and the described positive pole ear corresponding with described pole or negative lug are connected with the bottom surface of described lug connecting portion.
9. electrokinetic cell according to claim 8, is characterized in that, described positive pole ear and described negative lug are multiple.
10. electrokinetic cell according to claim 8, is characterized in that, also comprises insulation assembly, and described coping plate is metal material, and described Positive Poles and described negative pole pole are all connected with described coping plate by described insulation assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520788752.9U CN204946996U (en) | 2015-10-13 | 2015-10-13 | The pole of electrokinetic cell and adopt the electrokinetic cell of this pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520788752.9U CN204946996U (en) | 2015-10-13 | 2015-10-13 | The pole of electrokinetic cell and adopt the electrokinetic cell of this pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204946996U true CN204946996U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520788752.9U Ceased CN204946996U (en) | 2015-10-13 | 2015-10-13 | The pole of electrokinetic cell and adopt the electrokinetic cell of this pole |
Country Status (1)
| Country | Link |
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| CN (1) | CN204946996U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017381A (en) * | 2017-05-03 | 2017-08-04 | 东莞塔菲尔新能源科技有限公司 | A kind of electrokinetic cell |
| CN107204419A (en) * | 2016-03-18 | 2017-09-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| TWI628828B (en) * | 2016-04-01 | 2018-07-01 | 張世梁 | Cell and method for manufacturing the same |
| CN113422101A (en) * | 2021-07-19 | 2021-09-21 | 新余赣锋电子有限公司 | Steel shell button cell without magnetic field interference |
| CN114300814A (en) * | 2021-12-17 | 2022-04-08 | 上海瑞浦青创新能源有限公司 | Pole structure for non-isopolar lug and top cover, welding method and lithium battery |
| CN114552086A (en) * | 2021-11-11 | 2022-05-27 | 东莞锂微电子科技有限公司 | Pole welding structure of square steel shell battery and battery |
| US11362395B2 (en) | 2020-04-30 | 2022-06-14 | Contemporary Amperex Technology Co., Limited | End cover assembly, secondary battery, battery pack and electric device |
| CN115020933A (en) * | 2022-08-10 | 2022-09-06 | 楚能新能源股份有限公司 | Battery cell safety protection device |
| CN115117569A (en) * | 2022-07-25 | 2022-09-27 | 实联长宜淮安科技有限公司 | Square aluminum-shell lithium ion power battery with high energy density |
| WO2024027034A1 (en) * | 2022-08-04 | 2024-02-08 | 江苏时代新能源科技有限公司 | End cap assembly, battery cell, battery and electric device |
-
2015
- 2015-10-13 CN CN201520788752.9U patent/CN204946996U/en not_active Ceased
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107204419A (en) * | 2016-03-18 | 2017-09-26 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| CN107204419B (en) * | 2016-03-18 | 2023-07-11 | 宁德时代新能源科技股份有限公司 | Secondary battery |
| TWI628828B (en) * | 2016-04-01 | 2018-07-01 | 張世梁 | Cell and method for manufacturing the same |
| CN107017381A (en) * | 2017-05-03 | 2017-08-04 | 东莞塔菲尔新能源科技有限公司 | A kind of electrokinetic cell |
| CN107017381B (en) * | 2017-05-03 | 2024-06-04 | 江苏正力新能电池技术有限公司 | Power battery |
| US11362395B2 (en) | 2020-04-30 | 2022-06-14 | Contemporary Amperex Technology Co., Limited | End cover assembly, secondary battery, battery pack and electric device |
| CN113422101A (en) * | 2021-07-19 | 2021-09-21 | 新余赣锋电子有限公司 | Steel shell button cell without magnetic field interference |
| CN114552086A (en) * | 2021-11-11 | 2022-05-27 | 东莞锂微电子科技有限公司 | Pole welding structure of square steel shell battery and battery |
| CN114300814A (en) * | 2021-12-17 | 2022-04-08 | 上海瑞浦青创新能源有限公司 | Pole structure for non-isopolar lug and top cover, welding method and lithium battery |
| CN114300814B (en) * | 2021-12-17 | 2024-04-16 | 上海瑞浦青创新能源有限公司 | Pole structure for unequal pole lugs and top cover, welding method and lithium battery |
| CN115117569A (en) * | 2022-07-25 | 2022-09-27 | 实联长宜淮安科技有限公司 | Square aluminum-shell lithium ion power battery with high energy density |
| WO2024027034A1 (en) * | 2022-08-04 | 2024-02-08 | 江苏时代新能源科技有限公司 | End cap assembly, battery cell, battery and electric device |
| CN115020933A (en) * | 2022-08-10 | 2022-09-06 | 楚能新能源股份有限公司 | Battery cell safety protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 352100 Jiaocheng District of Ningde City, Fujian Province Zhang Wan Zhen Xingang Road No. 1 Patentee after: Contemporary Amperex Technology Co.,Ltd. Address before: Zhang Wan Zhen Xingang Lu Fujian province Ningde city Jiaocheng District No. 1 Patentee before: CONTEMPORARY AMPEREX TECHNOLOGY Ltd. |
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| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20230707 Decision number of declaring invalidation: 562370 Granted publication date: 20160106 |